<p>Lost the Aperture control on my P6 Biometer 2.8/80 which brought me to tears. Searching around I found a reference to Stanislav at Mechanical Camera Repairs, NY. After calling he confirmed he could handle the job and quoted a very reasonable price (in today's world I rate any lens repair for under US$100 as reasonable) so off it went. Returned within 10 days in perfect condition. In the absence of JDL, such support for Pentacon lenses is worth knowing.</p>